Riveting machine



July 7, 1931.

RIV`ETING MACHINE Filed Sept. 24, 1929 ATTORNEYS.

J. G. MCCLEAN n 1,813,415

2 Sheets-Shee l v July 7, 1931. J. G. MCCLEAN 1,813,415

' RIVETING MACHINE Filed Sept. 24', 1929 2 Sheets-Sheet 2 ATTORNEYS.

Patented July 7, 1931 UNITED STATES JOHN G. MCCLEAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GRANT MANFACT'URING Y AND MACHINE COMPANY, OIE* BRIDGEPORT,CONNECTICUT, A CORPORATION OF CON- N ECTICUT RIVE'IING INACHINE i Application filed September 24, 1929. `Serial=No. 394,758.

This invention relates to new and useful improvements in riveting machines such as are used for forming heads on rivets and other metal articles.

Y The invention more particularly applies hammer and to which is also vimparted ro-v tary movement.

A feature of the inventionis to provide an improved form of helve having vnovel driving connections and improved flexible means for supporting the hammer from the helve and'further includes inclosed rotatable driving connection of rotary drive and hammer spindle.

VA further object of the invention is to provide an adjustable table beneath the hammer for supporting the work to be riveted.

With these and other objects in view, the invention resides and consists in the construction and novel combination and arrangement of parts hereinafter more fully described,

illustrated in the accompanying drawings,

and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion, size and minor details of construction within the .scope of the claims may be resorted to without departure from the'spirit, or sacrificing any of the advantages of the invention.V

Similar characters of reference denote like or corresponding parts throughout the several figures, 'of the accompanying drawings forming a part of this speciiication and upon which V Fig. 1 shows a side elevation of my improved riveting hammer;

Fig. 2 is a top plan view on a slightly enlarged scale of the machine shown in Fig. 1, the motor for driving theinachine being omitted; V

Fig. 3 is an enlarged vertical section taken on line 3-3 of Fig. 1 looking in the direction of the arrow;

Fig. 4 is a central vertical section taken on line 4-4 of Fig. 2'better to illustrate the hammer and its rotating and reciprocating 0 driving connections; and v the pivotal blockc used in the hinged connection of helve with driving eccentric.

Referring in detail to the characters of reference marked upon the drawings, 6 indicates the base of apedestal 7 which supports the several parts of the machine. This pedestal includes a forwardly projected arm 8 which carries the reciprocatory hammer again to be referred toand also includes a pair of upwardly extended bearings 2 9 in which the helve is pivotally supported. A hollow support 10 issecured to the base,v and in it is mounted a post 11 whose lower threaded end portion 12 is provided with attached threaded adjusting nuts 13'and 14, the latter being positioned upon the top of the support 10 and the two serving to adjustably retain the post upon and` within lthe support. The upward end of this'post is suitably connected as at 15 with a table 16 positioned beneath the hammer head in-a way to support .work thereon to be riveted. This table is provided `with suitable waysl. to engage vertical guides 13 formed upon theface of the pedestal and whereby thetable is free to be raised and lowered through the action of thepost and its adjusting nuts 13 and 14. The face of the column is further provided with aligned verticalslots in which is mounted bolts 19 that are carried in suitable holes of the flanges of the table and are provided with nuts 20 whereby the bolts and nuts may be tightened to clamp the table to the column and iirmly support the same below and with respect to the hammer which strikes down toward the face of the table.

21 represents an electric motor which is secured tothe back of the pedestal and is operatively connected by means of a belt 22 with a driving pulley 23 normally loose upon a shaft 24 journaled inkaligned bearings 25-25 of the hubbed portions 26 of the pedestal. The driving connection of the shafty 24 with the pulley 23 is made through a clutch mechanism, the outer member 27 of which is pinned to the outer end portion of the shaft 24 and has an annular face which bears upon an annular surface on one side of the pulley 23. A

somewhat similar though movable clutch Fig. 5 shows a detachedperspective View of 'l section 60 of the helve` is provided with a hole 74 through which loosely extends a hammer rod 75, the lower end portion of which is secured to the reciprocatory and rotatable hammer spindle 48 which carries the hammer head 50. Gushioning means is provided between this rod 75 and the helve member 60, comprising suitable rubber members 76 which are mounted upon the rod. A suitable washer 77 is positioned between each of the rubber members 76 and the helve 60 and a plate 78 is also positioned upon the rod and below the top rubber member and the end of spindle 48. Upon this rod above the top is positioned another washer 7 9 which is seated against the top side of the rubber 76. Nuts 80 which are threadedly attached to the upper threaded en d of this rod 75 serve as an adjusting means for positioning the upper rubber and its washers with respect to the helve so as to insure and regulate the amount of play for the helve with respect to said bearing plate 78 and 78.

From the foregoing it will be understood that power for the machine is applied from the motor which serves to continuously drive the pulley 23. 1When it is desired to perform a riveting operatiointhe attendant places the work to be riveted upon the table and beneath the hammer and thereupon places his foot on the treadle in a way to engage the drive of the pulley with the crank shaft which in turn rec-iprocates the helve and vibrating hammer head, there being a relatively positive operating connection between the crank shaft and short end of the helve While the forward or longer end of the helve is provided with a slight lost motion, better to insure the desired operation of the hammer and longevity of the machine. Both ends of this lever are provided with suitable rubber cushions to properly co-operate with the helve and pitman connections in the one instance, and the helve and hammer connections in the other instance.

Having thus described my invention, what I desire to claim and secure by Letters Patent is 1. In a riveting machine7 the combination of a pedestal including an arm having a shouldered hole therethrough smaller through one portion than the other, and a transverse hole intersecting the larger diameter, a cylindrical bearing within the smaller diameter and having an annular flange seated upon the shoulder in the lirst mentioned hole, a similar cylindrical bearing having an annular flange positioned in the larger diameter of the hole, a flanged cylindrical bushing surrounding the last mentioned bearing and seated against its flange, means for securing the flange of the larger bushing to the arm and the smaller bushings in position, a reciprocatory and rotatable hammer spindle journaled in the bearings, a worm gear positioned between the flanged ends of said bearings within the larger diameter of the hole and upon the hammer spindle to which it is splined for reciprocatory movement of the spindle, means for reciprocating the hammer spindle in its bearings and gear, and means for rotating the worm gear and spindle.

2. A riveting machine, comprising a pedestal, a helve pivotedly mounted therein in' cluding a metal rocker member having aligned trunnions and a rearwardly extended forked end portion, a reciprocatable hammer spindle carried by the forward end of the helve, means for rotating said spindle, a cylindrical rocker member having reduced end portions journaled in the forked end of helve and having a transverse hole through its central and larger portion, a block mounted on the rocker member and having a hole to register with the hole in the rocker member, a rod extended through said block and rocker member, washers situated on top and bottom sides of said block, rubber cushions carried on the rod and washers, a driving shaft, and adjustable eccentric connections between said shaft and helve. y

Signed at Chicago in the county of Cook and State of Illinois this 16th day of September A. I). 1929. r

JOHN Gr. MCCLEAN. 

